Level 11 is basically a giant storage unit. There are loads of large wooden crates any way you look.
GM:At Key 5, spare lava armour prototypes. Looks like big wooden crates, but inside, actual metal safes with some electronic locks as per the 21st century. The safes are large enough to hold a full suit of armour each. These are known to be off-limits to staff and the Rubys are happy to shoot offenders and throw them to the sharks as an example of how to behave. Pay well, do as we say or else.